When was the third line construction in Guizhou?

The third-line construction is an extremely large-scale industrial migration process in China's economic history, which took place against the background of Sino-Soviet hostility and the US attack on the southeast coast of China. It is an important part of national defense construction and national economic construction.

The implementation of the third-line construction has made great contributions to strengthening China's national defense strength, improving the layout of productive forces and industrialization in the central and western regions. However, due to the backward social economy in the third-tier areas, it is difficult for established enterprises to operate and develop for a long time.

Third-line construction includes big third-line construction and small third-line construction. The third-line construction is the construction of China's national strategic rear base and the main part of the third-line construction. The construction content is the construction of China's national strategic rear base with national defense industry and basic industry as the main body, including transportation, post and telecommunications. The main parts of the third-line construction are fuel and electricity, agriculture and light industry.